I dunno. There's certainly more "refined" strings out there that are technically "better" I suppose--I use DRs typically for rounds.
I like worn-in strings anyways so long life has never been that big a factor personally.
Maybe it's just 'cause it's such a classic combo from days of yore, I put them on and it felt like my youth

And they DO have a certain sound that just kinda works great with a regular 'ol P.